Investigators may have discovered an alternative way to find Nancy Guthrie. The mother of three is still missing, with thousands of potential leads being looked at. She is 84 and said to be in need of ...

The “ethical hacker” who created the Bluetooth “signal sniffer” being used to try to track Nancy Guthrie’s pacemaker said he created the high-tech tool specifically for the search for the missing ...

The search for Nancy Guthrie has taken a high-tech turn. The Arizona police department is now flying over the Tucson, Ariz., desert with a Bluetooth signal detector, also known as a signal sniffer, in ...